Paper feed roller



en'ss'raa caunmn; ormama, *ronx, assre'noa'ro nnnc'rnon'rzo I PatentedAug. 23,-

um'raoz fs'rarss PA T" O ICE 'rrrnwmas, me. ;jo1 nooarsrna, roan. a'ooa'roaanon or newsman:

" run rm norm Application fled leptemller 11,1 9. m n at. 1,215.

This invention relates to improvements in rollers, and particularly tothat kind of rollers used for feeding aperrolls or perforat ed sheets inpower riven typewriting ma- 5 chines or perforatingmachines in whichmeans are provided at the ends of the roller for positively engaging.the sheet to be fed. Such rollers are usually provided withcircumferentially arranged; studs or projec 1o tions at their ends whichare adapted to engage perforations arranged along the side edges 'of thesheet. Since the wi h of the sheet varies with atmospheric conditionswhich affect its temperature and moisture content, unless suchconditions are nearly uniform, the perforations at one side of the"sheet fail'to register with the projections on the roller, or the sheetbuckles between its ends, and its perforations which control the machinefail to register exactl with the parts to be controlled thereby. thisdifiiculty, it has been pro used to provide thepro3ectionsat one on ofthe roller movable end sometimes fail to register.

The-object of this invention is to provide a simple and inexpensivemeans for moving the; projections at opposite ends of the roller equaldistances laterally so that the expansion or contraction of the sheet isevenopposite sides of the middle ly distributed on of the roller.

Another object of the invention is to 10- vide a roller of this kind inwhich the s eet engaging projections atthe ends of the rolle;

er are connected by means arranged within the roller for moving themequaldistances toward or from each other.

' To these and other ends, the invontion'consists'in the constructionand arran ment of 0 headed screws 17 and 18'thread'ed in; d1a-'metrically opposite tapped, openings in the parts that will appear fromthe ollowin description when read in'oon'unction wit the accompanyingdrawing t e novel features being pointed out in the end of .thespecification.

claims at the In the drawing; v Fig. 1 is a longitudinal section of afeed roller illustrating one possible embodiment of the invention; l v

Fig. 2 is an end elevation of the same; Fi 3 is a transverse sectiontaken substantially on line 3-3 of Fig. 1 and Fig. 4 is a section takenon line 4-4 of therewith are hollow'cores or sleeves 3 and and spacedfrom the sleeve 4 is a secon sleeve 5, and secured in the slee es 4 and5 and projecting from the end of the roller is atubular member 6 inwhich a stub shaft 7 is mounted. The stub shaft 7 is mounted at its.inner end in a bushing 8 and extends through the tubular member 6 and ismounted in the frame by means of the lock nuts 9.

Mounted on the tubular member 6 and slidable thereon to and from the'endof the body 1 is a ring 11 havingv circumferentially arranged studs orpromotions 12 adapted to engage perforations provided therefor at theside of the sheet to be fed. Fixed inv this ring to move therewith andarranged substan-' tially parallel to the axis of the roller are therods or shafts Band 14. Therods or shafts each other. At their innerends t e rods 13 I and 14 operatively engage the ends of levers 15 and16 pivoted intermediate their ends on tubular member 6. Theoppo'site'ends ofv the levers 15 and 16 operatively engagerods or shafts 19 and 20which extend longitudinally.

,/ rings through the roller and have a. ring 21 secured thereto at theirouter ends by any suitother of said rings through the levers 15 and 16and the rods connected therewith. The 11 and 21 are hence readilyadjusted to the width of the sheet and automatically ad- 'ust themselvesthereto, such adjustment bemg substantially equal in opposite directionsroll machines or the like comprising from the middle of the sheet sothat rfora- 'tions or othermatter appearing on t e sheet receive butslight lateral displacement on the er. a v The sleeve or collar 3mounted in the end 1-. of the roller projects laterally therefrom toprovide a support 23 on which the ring 21 is slidably mounted.

Although only one embodiment of the invention is shown and describedherein, it will be understood that this application is intended to coversuch changes or modifications as come within the spirit of the inventionor. scope of the'following claims, and although a roller for feeding amaster sheet is 'de-. scribed, a roller thus constructed will founduseful wherever sheets are to be positively fed by means of rollers.

I claim:

1. A sheet feeding roller for typewriting acylindrical body portion, aring arrange at each end of said body portion and movable toward andfrom the ends thereof, means operatlvel connecting said rings for imarting simu .taneous movement thereto, an means on said rings forpositively engaging a work sheet.

2. A sheet feeding roller or typewriting cylindrical body portion, aring arranged at each end of said body portion and movable toward andfrom the ends thereof, a rod projecting inwardly from each of saidrings,

means operatively connecting the inner ends j V of said rods for movingthe rings simultaneously in opposite directions, and means on the ringsfor positively engaging a work sheet. I

3. A sheet feeding roller for typewriting machines or the likecomprising a hollow cylindrical body portion, a ring arranged at eachend of said body portion and movable f toward and from the endsthereof,,a lever pivoted in said body portion, means operatlvelyconnecting the opposite ends of said aerator:

lever with said rings, and means on said rings for positively en aging awork sheet- 4. A sheet f ing roller for typewriting machines or the likecomprising a hollow cylindrical body portion, a ring arran d at each endof said body portion and mova le toward and from the ends thereof, alever pivoted in said body portion and arranged to swing in aplaneparallel with its axis a rod operatively connecting each end of 15said lever with one of said rings, and means 01x11 said rings forpositively engaging a work s eet.

5. A sheet feeding roller for typewriting machines or the likecomprising a hollow cylindrical body ortion, a ring arranged at each endof said y portion and movable toward and from the ends thereof, a pairof levers pivoted in said body portion and arranged to swing in planesparallel with its axis, a pair of rods secured toeach of said rings atone end and operatively connected .with said levers at their other ends,and means on said rings for positively engaging a work sheet. 7 I,

- 6. A sheet feeding roller for typewriting machines or the likecomprising a hollow cylindrical body portion, a ring arranged at eachend of said body ortion and movable toward and from the en s thereof, asupport secured in said bod portion, a plurality of levers pivoted onsaid support, a pair of rods corresponding-to each of said levers onesecured in each of said. rings and operatively connected with oppositeends of one of said levers, and means on said rings for positively enagin a work sheet.

. A s eet feeding roller for typewriting machines or the like comprisinga hollow cylindrical body portion, a ring arranged at each end of saidbody portion and movable toward and from the ends thereof, a pair oflevers having arms of al length, rods connectin one arm of ea zli, ofsaid levers with one 0 said rings and the other arms with the other ofsaid rings, and means on said rings for'positively en aging a worksheet.In witness whereof I ave hereunto" signed my name.

CHESTER W. GRUMRINE. m

